public override void OnCreate(Bundle savedInstanceState)
 {
     CreateWillBeCalled?.Raise(this, savedInstanceState);
     base.OnCreate(savedInstanceState);
     CreateCalled?.Raise(this, savedInstanceState);
 }
 protected override void OnCreate(Bundle bundle)
 {
     CreateWillBeCalled.Raise(this, bundle);
     base.OnCreate(bundle);
     CreateCalled.Raise(this, bundle);
 }